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    • 7. 发明申请
    • ULTRA-HIGH PURITY NITROGEN AND OXYGEN GENERATOR
    • 超高纯氮气和氧气发生器
    • WO1993021488A1
    • 1993-10-28
    • PCT/EP1993000768
    • 1993-03-26
    • L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET ...NAGAMURA, TakashiYAMAMOTO, Takao
    • L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET ...
    • F25J03/04
    • F25J3/04854F25J3/04218F25J3/04284F25J3/0429F25J3/0443F25J3/0486F25J2200/34F25J2200/50F25J2200/52F25J2200/90F25J2215/44F25J2215/56F25J2245/40F25J2250/40F25J2250/50
    • A generator produces ultra-high purity nitrogen and ultra-high purity oxygen simultaneously by the liquefaction and rectification of feed air. Feed air is rectified in a first rectification column (4), and nitrogen gas separated to the column top thereof is liquefied, in a nitrogen condenser (8), by oxygen-enriched liquid air separated to the bottom portion of the first rectification column. The oxygen-enriched liquid is fed to the upper portion of a second rectification column (5) having a reboiler (5a) in its column bottom, so that through its rectification in the second rectification column oxygen gas is fed from above a liquid reservoir to the lower portion of the third rectification column (6). Through the rectification of the oxygen gas in the third rectification column, high purity oxygen gas, from which impurities having higher boiling points than that of oxygen have been removed by liquefaction, is fed to the center portion of the fourth rectification column (7) having a condenser (7e) in its top portion and reboiler (7a) in its bottom portion. Through the rectification of the high purity oxygen gas in the fourth rectification column, impurities having lower boiling points than that of oxygen are exhausted from the top portion thereof as non-condensed gas and ultra-high purity liquid oxygen is separated to the column bottom thereof.
    • 发电机通过进料空气的液化和整流同时产生超高纯氮和超高纯氧。 在第一精馏塔(4)中对进料空气进行精馏,在氮气冷凝器(8)中,通过分离到第一精馏塔底部的富氧液体空气将分离塔顶的氮气液化。 富氧液体在其塔底部被供给到具有再沸器(5a)的第二精馏塔(5)的上部,从而通过在第二精馏塔中的精馏将氧气从液体储存器上方供给到 第三精馏塔(6)的下部。 通过第三精馏塔中的氧气的精馏,通过液化从其中除去沸点高于氧气的杂质的高纯度氧气被送入第四精馏塔(7)的中心部分,其具有 顶部的冷凝器(7e)和底部的再沸器(7a)。 通过第四精馏塔中的高纯度氧气的精馏,将沸点低于氧气的杂质从其顶部排出,作为非冷凝气体,超高纯度液氧分离为塔底 。